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There are 3 flavors to select and 3 toppings to select.
Number of ways to select a flavor = `^3C_1`
Number of ways to select a topping = `^3C_1`
No.of ways to order ice cream with a flavor and topping `= ^3C_1*^3C_1`
There are 9 ways to order a ice cream with a flavor and a topping.
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